Finding the Fourth Proportional to 31,034.34, 42,827.40 and 16,887.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,034.34 : 42,827.40 = 16,887.15 : x
2. Step 2: Convert to fraction form
   31,034.34/42,827.40 = 16,887.15/x
3. Step 3: Cross multiply
   31,034.34x = 42,827.40 × 16,887.15
4. Step 4: Simplify right side
   31,034.34x = 723,232,727.91
5. Step 5: Solve for x
   x = 723,232,727.91/31,034.34
6. Step 6: Final answer
   x = 23,304.27